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Computer screen problems
• Problem: The screen is blank.
Solution: Do the following:
– Press the display-mode switching key
– If you are using the ac power adapter, or using the battery and the battery gauge shows that the battery
is not depleted, press the brightness-up key
– If your computer is in sleep mode, press Fn to resume from the sleep mode.
– If the problem persists, follow the solution for the following problem.
• Problem: The screen is unreadable or distorted.
Solution: Make sure that:
– The display device driver is installed correctly.
– The screen resolution and color quality are correctly set.
– The monitor type is correct.
To check these settings, do the following:
1. Connect the external monitor to your computer, and then connect the monitor to an electrical outlet.
2. Turn on the external monitor.
3. Right-click on the desktop, and do one of the following:
– For Windows 7: Click Screen resolution.
– For Windows 10: Click Display settings, show the displayed window in full screen, and then
click Advanced display settings.
Note: If your computer cannot detect the external monitor, click the Detect button.
4. Select the external monitor and set Resolution.
5. Do one of the following:
– For Windows 7: Click Advanced settings.
– For Windows 10: Click Display adapter properties.
6. Click the Monitor tab. Check the monitor information to make sure that the monitor type is correct.
If the monitor type is correct, click OK to close the window; otherwise proceed with the following steps.
1. If more than two monitor types are displayed, select Generic PnP Monitor or Generic Non-PnP
Monitor.
2. Click Properties. If you are prompted for an administrator password or confirmation, type the
password or provide confirmation.
3. Click the Driver tab.
4. Click Update Driver.
5. Click Browse my computer for driver software, and then click Let me pick from a list of device
drivers on my computer.
6. Clear the Show compatible hardware check box.
7. Select the correct manufacturer and model for the external monitor. If you cannot find your monitor
on the list, stop the installation of this driver and use the driver shipped with your monitor.
8. After updating the driver, click Close.
9. For the Windows 7 operating system, to change the color settings, right-click on the desktop, and
click Screen resolution. Click Advanced settings, select the Monitor tab, then set Colors.
to bring up the image.
to make the screen brighter.
.
Chapter 8
Troubleshooting computer problems
97
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